dynamic reconfigure values from rosparam may not work

[bmegli]

Identified in:

• setting MTU at launchtime #24 (comment)

The default behavior in ROS:

• dynamic reconfigure defaults are read
• then overwritten from parameter server
• finally dynamic reconfigure callback is called with above vales

In camera aravis:

• https://github.com/Extend-Robotics/camera_aravis/blob/extend/src/camera_aravis_nodelet.cpp#L491
  • overwrites default dynamic reconfigure values
• and in callbacks checks for changes
• so no changes will be detected

Unless some value is set by other means

• generic rosparam -> GenICam mapping
• or explicit setting from rosparam

Dynamic reconfigure overwrite from rosparam will not work (at start time)

[bmegli]

Above is at launch time.

Any manipulation later through dynamic reconfigure should work.